Cooktop



FIG. 1 is a front perspective view of the design of the cooktop;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view with the left side being a mirror image thereof;

FIG. 5 is a front perspective view of the design of the cooktop shown in another embodiment, thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a front elevational view thereof; and,

FIG. 8 is a right side elevational view with the left side being a mirror image thereof.

The broken lines shown are for illustrative purposes only and form no part of the design claimed. 

The ornamental design for a cooktop, as shown and described. 